Inteoduction To The Lymphstic System

Question 1

Functions

Answer 1

Circulatory- lymph fluid comes from blood vessels, is filtered and returns to blood circ by spleen

Immune- produces wbc via
Lymph nodes
Spleen
Thymus

Question 2

Components of lymph drainage

Answer 2

Collection

Flow

Reintroduction

Question 3

How is lymphatic fluid collected

Answer 3

Lymgpatix capillaries surround the caps of circ system

High pressure causes fluid to escape the porous caps which enter the lymph caps

The lymph fluids reach lymph nodes for the FIRST PROCESSING location

Lymph flows proximal until it teaches 2 locations
1)Thoracic duct 2) right lymphatic duct

Question 4

what is the Thoracic duct

Answer 4

The larger lymph channel that collects lymphatic fluid from the

• left side of the head & neck
• the right shoulder and arm
• everything below the diaphragm

Question 5

What is the right lymphatic duct

Answer 5

The smaller channel that collects lymph from the right head, neck snd upper limb only

Question 6

Where so the Right Lymphatic Duct and Thoracic duct drain back into the circ system

Answer 6

Venous angle- 90degree point where the Internal Jugular Vein meets the Subclavian vein

RLD drains into Right Venous Angle

Thoracic duct drains into Left Venous Angle

Question 7

Anatomy of lymph nodes

Answer 7

Have several Afferent vessels bringing fluid into the node

Fluid enters into the cortex down to the medualla/ central core

If antigens are presents and harmful then the lymph nodes makes Wbc against the antigenic

Fluid leaves via a single EFferent vessels

Lymph nodes have their own venous & arterial supply

Question 8

Groups of Ln in the body

Answer 8

Cervical - drain head and neck
Axillary- armpit
Lumbar- abdomen
Inguinal- pelvis

Question 9

Location and size of spleen

Answer 9

Ribs 9-11

1 inch thick, 3 inches wide, 5 inches long

Question 10

Blood supply to spleen

Answer 10

Splenic artery

Splenic vein

Question 11

Why does the spleen have such a large arterial supply

Answer 11

It’s role is to provide mechanical filtration of the blood

Question 12

Why does the spleen have a large Venous supply

Answer 12

To return the broken down components to the liver

Question 13

Roles of the splee

Answer 13

Mechanical filtration of blood

Immune response by production of wbc in presence of the antigend

Question 14

Why is trauma to the left side if the abdomen (ribs 9-11) a concern

Answer 14

The spleen is located between ribs 9-11 and susceptible to damage

May lead to rupture of the spleen and loss of a large vol of blood

Hypovolemia- shock